145,200
145,200 is a composite number, even.
145,200 (one hundred forty-five thousand two hundred) is an even 6-digit number. It is a composite number with 90 divisors, and factors as 2⁴ × 3 × 5² × 11². Its proper divisors sum to 366,052, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x23730.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 12
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 2,541
- Recamán's sequence
- a(218,016) = 145,200
- Square (n²)
- 21,083,040,000
- Cube (n³)
- 3,061,257,408,000,000
- Divisor count
- 90
- σ(n) — sum of divisors
- 511,252
- φ(n) — Euler's totient
- 35,200
- Sum of prime factors
- 43
Primality
Prime factorization: 2 4 × 3 × 5 2 × 11 2
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√145,200 = [381; (19, 1, 1, 5, 1, 3, 1, 1, 1, 29, 1, 5, 3, 47, 3, 5, 1, 29, 1, 1, 1, 3, 1, 5, …)]
Period length 28 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-five thousand two hundred
- Ordinal
- 145200th
- Binary
- 100011011100110000
- Octal
- 433460
- Hexadecimal
- 0x23730
- Base64
- Ajcw
- One's complement
- 4,294,822,095 (32-bit)
- Scientific notation
- 1.452 × 10⁵
- As a duration
- 145,200 s = 1 day, 16 hours, 20 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋 𒌋𒌋 ·
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢
- Greek (Milesian)
- ͵ρμεσʹ
- Mayan (base 20)
- 𝋲·𝋣·𝋠·𝋠
- Chinese
- 一十四萬五千二百
- Chinese (financial)
- 壹拾肆萬伍仟貳佰
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 145200, here are decompositions:
- 7 + 145193 = 145200
- 23 + 145177 = 145200
- 61 + 145139 = 145200
- 67 + 145133 = 145200
- 79 + 145121 = 145200
- 109 + 145091 = 145200
- 131 + 145069 = 145200
- 137 + 145063 = 145200
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A3 9C B0 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.55.48.
- Address
- 0.2.55.48
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.55.48
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 145,200 and was likely granted around 1873.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.